Bank earnings are coming in mixed. A few days ago, JPMorgan Chase (JPM) reported its profit was up 47%. Then, Goldman Sachs (GS) reported earnings were down 52%. And on Wednesday, we got a stellar performance by Morgan Stanley (MS).

The Wall Street Journal reports that Morgan Stanley's profits were up 35% to $867 million, up from $460 million a year ago. Earnings jumped to 41 cents per share from 29 cents per share. Net revenue jumped 14% to $7.81 billion. Analysts at Thomson Reuters had forecast earnings of 35 cents a share on $7.35 billion.

Global investment bank earnings are expected to be down 50%. Why such a drop? A key factor has been the freeze up of takeovers and IPOs. The European banks will be especially hard hit. The sovereign debt crisis in countries like Greece, Spain and Portugal has sent investors to the sidelines.

In the U.S., the boom in equities and accompanying commissions has cooled considerably. Worries about financial reform has also taken its toll.

Banks have seen a hectic couple of days' of trading, thanks to a bevy of news. I thought it may be good to take a look at some earnings results from a few of the banks, and what it could mean for the economy going forward.

First, let's look at the earnings:

• JPMorgan Chase (JPM): earnings of 74 cents per share; expectations for 60 cents per share
• Citigroup (C): a loss of six cents per share; expectations for a loss of 33 cents per share
• Goldman Sachs (GS): earnings of $8.20 per share; expectations for earnings of $5.20

Several banks, including Wells Fargo & Company (NYSE: WFC), JPMorgan Chase & Company (NYSE: JPM), Goldman Sachs (NYSE: GS), and Citigroup, Inc. (NYSE: C), have reported earnings that beat expectations substantially. All earnings were down compared to last year but much less than what the experts were expecting. The stock market reacted to these earnings reports like gasoline on a fire and exploded to the upside.